/Engine/Plugins/FX/Niagara/Source/Niagara/Classes/NiagaraScript.h
Creates a string key for the derived data cache
[FString](API\Runtime\Core\Containers\FString) GetNiagaraDDCKeyString ( const [FGuid](API\Runtime\Core\Misc\FGuid) & ScriptVersion, const [FString](API\Runtime\Core\Containers\FString) & ScriptPath )